Watch case



FIG. 1 is a top, front and left side perspective view of a watch case showing my new design, the dotted or broken line showing of a watch dial and tennis bracelet are for environmental purposes only and form no part of the claimed design;

FIG. 2 is a front elevational view;

FIG. 3 is a left side elevational view;

FIG. 4 is a bottom, rear and right side perspective view;

FIG. 5 is a rear elevational view; and

FIG. 6 is a right side elevational view thereof. 

The ornamental design for a watch case, as shown and described. 